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This part of DIN EN ISO 13503 provides a consistent methodology for determining the viscosity of completion fluids used in the petroleum and natural gas industries. For certain cases, methods are also provided to determine the rheological properties of a fluid. For Germany, Working Group NA 109-00-01-03 AK "Bohrspülung und Zemente - Spiegelausschuss zu ISO/TC 67/SC 3" ("Drilling and completion fluids, and well cements - Mirror Committee of ISO/TC 67/SC 3") of the Petroleum and Natural Gas Industries Standards Committee (NÖG) at DIN, the German Institute for Standardisation e. V., has participated in the preparation of this standard.
This document replaces DIN EN ISO 13503-1:2005-09 .